Author Topic: Black Hole  (Read 7587 times)

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Done in Lightwave.

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Offline Ashrak

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rename to wormhole then it is accurate.
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Offline Shrike

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Actually, it's a pretty good version.  Accretion disc and a pair of high-velocity jets.
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This is better than the one I found cause the lgiht is not so 'harsh', and it better depicts what I envison as a huge acceleration disk surrounding the event horizon...  If it's not to much trouble, do you have an earlier version without the jets? Or a bigger background so it'll fit in game better. (see there is this [Censored] and :blah: :blah: ] That is if you're willing to let it be used in game (for public release).
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Offline Nico

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I did one too ( same kind ), and somebody told me it looked bnothing like a real one is supposed to look. I made some searches, and the damn guy was hell... right :blah:
Anyway, it still looks cool that way, I just think the light "cones" are too wide
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Offline Deepblue

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First- Black hole too small make it bigger
Second- Make the dust particles fall into the hole in lines
Third- more color variation.

 
Make the dust fall in in lines? I'm not quite sure what you mean.
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Offline Deepblue

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less swirly more defined streams of matter into the hole

 

Offline LtNarol

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Black holes are supposed to be small...they're also not supposed to be visible since light can't escape them, but thats ok ;)

Nice graphics by the way :p

 

Offline Hudzy

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Now if only I could so stuff like that in LightWave. Ah well. Looks great if you asked me. :D

 

Offline Nico

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Quote
Originally posted by LtNarol
Black holes are supposed to be small...they're also not supposed to be visible since light can't escape them, but thats ok ;)

Nice graphics by the way :p


hmm, the black hole at the center of our galaxy is supposed to be gigantic. you can't see the blackhole, but you can see the acretion disk, and I've seen simulations of it, t looks weird ( you see the part of the acretion disk suposedly hidden behind the black hole both under and over the black hole itself, it makes some really weird distorsion effect ).
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thanks and they're supposed to be swirly it has to do with frame dragging and the ergo sphere and a bunch of stuff that's really complicated. mine should be more swirly than it is. and your right you cant see a black hole that whould be the black dot at the center which is the event horizon. what you can see is the accretion disk, the big swirly thing.
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Offline Nico

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shameless p1mp:
http://dynamic4.gamespy.com/~freespace/image.php?server=dynamic&url=art/big/gallery21/ottbh.jpg
that's mine :p
same pb as yours, as you can see ( plus mine is daaaaaaaark, but I always make dark renders )
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Offline mikhael

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Quote
Originally posted by LtNarol
Black holes are supposed to be small...they're also not supposed to be visible since light can't escape them, but thats ok ;)

Nice graphics by the way :p


Bad Narol! Back to elementary cosmology for you!

The accretion disc is visible from the outer edge to the event horizon because the matter is swirling in, constantly accellerating. As it gets pulled closer in and moves faster, there's less room for it to move, and collisions start happening. Pretty soon, you're seeing energy being bled off as light.

Singularities are small, but the black hole (as defined by the event horizon can be quite large, because it is defined by the mass of the singularity. As Venom said, the SMBH at the center of the Milky Way is absolutely massive.
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Offline LtNarol

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meh, I was refering to the singularity, not the disc :p

 
I'm sure there are a variety of sizes so who's to say how big the A disk is for any particular hole? Also there is the distance perspective... some might look tiny but have a huge a Disk depending on what type/amount of matter is being sucked in. I loved that movie "The Black Hole"... HAs someone modeled the Cygnus???;7
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Offline Eishtmo

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Quick bit.  The last time I checked (and I've been behind on my cosmology of late), the black hole at the center of our galaxy likely doesn't have much of an accretian disk.  This is due to the fact that everything with range has already been eaten.  There's no more fuel.  Regular black holes, however, probably look like the picture (well, the disk anyways).
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Offline Nico

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Quote
Originally posted by Eishtmo
Regular black holes, however, probably look like the picture (well, the disk anyways).


no they don't, the gravitational force deforms even light, which results in important visual aberations. look there:
http://www.mpifr-bonn.mpg.de/staff/hfalcke/bh/sld11.html
not the best exemples I saw, but this one can do.
Btw, the galactic black hole in the center of our galaxy ( the singularity itself I mean ), is supposedly 3 million kilometers  wide, which is, after all, really small (  less than 4 times the sun if I'm not mistaken )
« Last Edit: December 14, 2002, 09:05:12 pm by 83 »
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Offline mikhael

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Quote
Originally posted by Star Dragon
I'm sure there are a variety of sizes so who's to say how big the A disk is for any particular hole? Also there is the distance perspective... some might look tiny but have a huge a Disk depending on what type/amount of matter is being sucked in.


The size of the accretion disc is based on only two things: the distribution/density of matter within the "reach" of the  singularity and the mass of the singularity.
The larger the singularity mass, the larger the radius of the event horizon. That defines the inner limit of the accretion disc. The outer limit of the accretion disc is the "reach" of the singularity, before its gravity is overwhelmed by other, more local, strong gravity sources.
The density and distribution of matter between these inner and outer limits determines the character of the accretion disc.
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Offline Carl

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but how do you know it's wrong? have you ever been to a black hole? are a professional astronomer?
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